Fiesta ST mk7 rattle/knocking after gear change

[Mike_2193]

Hi all,
This is going to be long so sorry and don't feel obliged to read it all.
Hoping someone can advise on this. Got a Fiesta ST (mk7) love the car except for one thing and just wanted to know if anyone else has same issue.

Basically got a knocking/clunking sound whenever I change gear. I'm pretty sure it happens as you come off the clutch but can't pinpoint.

Can mainly hear it changing from 1st to 2nd and then 2nd to 3rd. Took it to one garage who said it was "rear beam bushes" but they didn't want to say for sure do told me to get a second opinion.

Took it to another garage and said it was an engine mount and was replaced with a powerflex part and said it was fixed. Got it back and noise is still there. Took it in again and they said it's just a characteristic of the car and advised me to take it to Ford.

Took it to Ford and they couldn't hear it but again, probably just a characteristic of the car.
I said that if that was the case I would have heard it when I got it but its only been the last couple of months I have noticed it.

Anyone else got this noise or ever had it and sorted it?

Sorry for this being long winded. Hope someone can give some genuine advise.

Thanks.

[bangerhoarder]

Can you pinpoint where it is? I’d imagine it could be a number of things including DMF, gearbox/engine mounts, release bearing etc.

[Mike_2193]

bangerhoarder said:

Can you pinpoint where it is? I’d imagine it could be a number of things including DMF, gearbox/engine mounts, release bearing etc.

It's difficult to say but sounds like it's coming from either the offside footwell or somewhere in that vicinity.

[Mike_2193]

Danj8608 said:

The issue you mention is to do with the lower torque mount. It bolts to the sub frame and to the gear box, the mount is the same on a 1.0 ecoboost the rubber bush has too much flex hence the knocking.

There are various aftermarket uprated ones available that will stop that knocking, and also can stop wheel hop under hard acceleration.

My previous 2 fiestas I ran the Collins performance torque mount heres an ebay item number for one
272889806996

You will get increased vibration at idle but its a small price to pay.

Yeah, I had one mount done. I don't know a lot about it but I think it was a top/front drivers side one.

Have already spent close to £200 on garage fees so don't really want to pay out if it may not solve the issue.

Thanks for the advice though

[bangerhoarder]

Offside will be away from the gearbox, clutch etc, as that’s nearside. Could be something with the crankshaft driven pulley, tensioners etc. Could be coinciding with gear changes as engine load changes. When did it last have a cambelt?

[Mike_2193]

bangerhoarder said:

Offside will be away from the gearbox, clutch etc, as that’s nearside. Could be something with the crankshaft driven pulley, tensioners etc. Could be coinciding with gear changes as engine load changes. When did it last have a cambelt?

It's a 2016 car with 36k on the clock so didn't think it would be that.

[bangerhoarder]

Pretty unlikely! As it sounds like there’s an engine mount there, it certainly fits the description.

[Mike_2193]

bangerhoarder said:

Pretty unlikely! As it sounds like there’s an engine mount there, it certainly fits the description.

So would you say it was another mount that needs replacing/upgrading?

[bangerhoarder]

As Danj8608 mentioned, and looking online, there’s a lower dogbone mount underneath and at the back of the engine. That will be there to stop the engine twisting around the driveshafts.

[Mike_2193]

bangerhoarder said:

As Danj8608 mentioned, and looking online, there’s a lower dogbone mount underneath and at the back of the engine. That will be there to stop the engine twisting around the driveshafts.

Was wondering if you could help me and sorry to show my ignorance, is a torque mount the same as lower engine mount and is lower engine mount same as rear engine mount. Or are they all different?

[bangerhoarder]

I’ll confuse you even more - it attaches to the gearbox. Have a look at this thread:

https://www.fiestast.org/threads/clunking-sound-wh...

[Mike_2193]

bangerhoarder said:

I’ll confuse you even more - it attaches to the gearbox. Have a look at this thread:

https://www.fiestast.org/threads/clunking-sound-wh...

Yep, I've read that page a couple of times and still don't know what is what. You can probably tell I'm not mechanically minded.

I've already had one top engine mount done but think I need the others done. Just not sure on which ones I need to buy as they all look different

[dragonflyjade]

I've put it down to a characteristic OP.

I've Powerflex bushed my Fiesta ST throughout, including the rear beam, and still get an occasional rattle from the offside upon pulling off. Belt, water pump and tensioner done last year. Nothing looks loose in the engine bay and windscreen scuttle seems secure. Puzzled, but I don't think I'll ever solve it. (68,700 miles today).

[Mike_2193]

dragonflyjade said:

I've put it down to a characteristic OP.

I've Powerflex bushed my Fiesta ST throughout, including the rear beam, and still get an occasional rattle from the offside upon pulling off. Belt, water pump and tensioner done last year. Nothing looks loose in the engine bay and windscreen scuttle seems secure. Puzzled, but I don't think I'll ever solve it. (68,700 miles today).

Yeah, I would put it down to a characteristic but surely it would have been doing it when I bought the car but it’s only the last few weeks I have noticed it.

[tomcol]

i know this is late but did you ever sort this problem? mine has started doing this after 40k miles? i cant find any answers. It seems to do this when i start to drive the car, after a while, the car seems to warm up and the noise goes.

[Mike_2193]

tomcol said:

i know this is late but did you ever sort this problem? mine has started doing this after 40k miles? i cant find any answers. It seems to do this when i start to drive the car, after a while, the car seems to warm up and the noise goes.

Hi,
No, it still does it. Have changed all 3 engine mounts, taken to numerous garages, some main dealers and some independents and none of them could find anything wrong.
One said it could be driveshafts but couldn't see anything wrong with mine send said there was no guarantee that new driveshafts would sort it.
If I were you though, if you haven't already, I'd change the 3 engine mounts to Powerflex yellow ones. You get a little more vibration (which i dont notice anymore since they've bedded in) but the standard ones are the same as on less powerful Fiestas so not really equipped to deal with the extra power of the ST. Just make sure to declare them to your insurance.
Let me know how it goes though if you do decide to investigate it.

[CrutyRammers]

Mike_2193 said:

tomcol said:

i know this is late but did you ever sort this problem? mine has started doing this after 40k miles? i cant find any answers. It seems to do this when i start to drive the car, after a while, the car seems to warm up and the noise goes.

but the standard ones are the same as on less powerful Fiestas so not really equipped to deal with the extra power of the ST. Just make sure to declare them to your insurance.

What symptoms of not being equipped to deal with the power are there?

[Mike_2193]

CrutyRammers said:

What symptoms of not being equipped to deal with the power are there?

The is much more movement and flexing from the engine in the bay. Upgraded mounts help reduce that.